Weather barrier / Discussions

Can I put a breathable peel and stick weather (air) barrier on the inside walls and ceiling?

...barrier that will still allow moisture to dry on the inside as to not have 2 vapour barriers, but stop any air and thus condensation. There would be no problem ...

Posted by Anomika Singhn Oct. 1, 2018, 9:56 p.m. Air and vapour barriers 1 Responses

Can I spray foam insulate from the outside?

...weather barrier . And read here for more information about choosing breathable weather barriers . Most specifically, read our guide page to find the best way ...

Posted by Kurt Klischuk June 6, 2019, 8:56 a.m. Wall assemblies - renovation 1 Responses

Is the ZIP sheathing system good or bad for water control?

...weather barrier and air barrier. It’s a great concept, but you are not alone in your skepticism. Before you give it a yay or nay, here are a couple of pages tha...

Posted by Trevor Prinz Nov. 26, 2019, 4:03 p.m. Walls and Roofs 4 Responses

Does using T & G wood plank instead of drywall affect where we put the vapor & air barrier?

...barrier . I won't go to far off on a tangent but please see this page about WRBs (weather resisistent barriers) as air barriers , because you could go with an e...

Posted by Sue Colbourne Nov. 9, 2019, 6:16 p.m. Walls and ceilings - interior surfaces 3 Responses

Can you spray foam a house from the outside?

...barrier , and as long as you have at least 2 inches it would also be a suitable vapor barrier , and it will offer you thermal protection with the highest R valu...

Posted by Joan Lawrence July 11, 2019, 7:17 p.m. Wall assemblies - renovation 3 Responses

What is the best way to insulate a home from the outside?

...barrier. If you do add new plywood sheathing, you could just tape the joints and it will act as your air barrier Read all about how to insulate exterior walls...

Posted by Sylvie Gagnon Dec. 12, 2017, 11:58 a.m. Wall assemblies - renovation 1 Responses

Can you use polyiso insulation on the exterior of a wall behind cedar siding on the west coast?

...barrier. Using it on the outside means you are installing an exterior vapour barrier and that’s not a good thing. what made you choose Polyiso? We would alt...

Posted by Iain Matheson Jan. 28, 2020, 10:38 p.m. Wall assemblies - renovation 1 Responses

How do you do insulation the outside of a log home?

...barrier / weather barrier membrane directly to the logs, then the insulation directly to the membrane with no air space. Attach the insulation boards with verti...

Posted by Michael Hickey Aug. 2, 2018, 6:03 p.m. Wall assemblies - renovation 1 Responses

What type of Insulation can I use on the exterior of my home?

...weather barrier / weather resistive barrier (WRB), and a breatheable one would serve you best to allow as much moisture to pass through as possible. read more h...

Posted by Scott Muller April 18, 2019, 2:19 p.m. Wall assemblies - renovation 6 Responses

I want to insulate the outside of my house, which type of insulation do you think is best?

...barrier, some are not. Some are air barriers, some are not. XPS foam insulation at about 1 inch thick will act as a vapour barrier, EPS foam insulation will sta...

Posted by Joe F Nov. 15, 2017, 10:34 a.m. Wall assemblies - renovation 7 Responses

Halo Exterra rigid exterior insulation - has anyone work with it?

...barriers and vapour barriers. Glad you're finding value in our pages, hope this all helps! The Difference between air barriers and vapor barriers Hi Mike ...

Posted by George Shannon Jan. 21, 2020, 3:39 p.m. Insulation and soundproofing 3 Responses

How do you do a Vapour Barrier in a Dense Pack Cellulose Wall?

...barriers seem to cause interior wall rot. My question emphasized the kind of weather we have in Ottawa, so lots of air conditioning in humid weather. (This is p...

Posted by Ian MacKay July 26, 2018, 2:48 p.m. Wall assemblies - renovation 3 Responses

Combo structural sheathing, WRB and thin insulation panel in Ontario?

...weather barrier in terms of vapor permeability - Weather barriers and home wraps – which one is best? We also have this page that will top up your understan...

Posted by Steve Bull Jan. 14, 2020, 6:06 p.m. Walls and Roofs 3 Responses

How do you prevent walls from rotting in humid climates?

...barrier have had mould show up in less than 2 years on his north wall. How can we avoid getting mould? If your neighbour had their walls rot that could be for a...

Posted by Rose Alderson Nov. 5, 2018, 4:34 p.m. Wall assemblies - new construction 1 Responses

I have many issues with my house where should I start?

...barrier so you can find and fix them. That list of questions is pretty long, and I think the best place for you to start is figuring out what your budget is t...

Posted by Bryan Squirrell Sept. 29, 2019, 3:08 p.m. Wall assemblies - renovation 1 Responses

What considerations should be made when installing a green roof on a metal building?

...weather we experience here in pine country has us questioning what plants are light enough, and are able to withstand the heat without an extensive root system....

Posted by Nina Flores Feb. 16, 2020, 4:57 p.m. Roof coverings 2 Responses

Can you use a vapour retarder paint on the ceiling instead of using a poly vapour barrier?

...barrier. Can you do this for the ceiling as well, thereby taking out that possible weak spot where the vapour barrier joins in with your walls? Vapour barrier p...

Posted by Anwas Qwelten June 8, 2019, 3:56 p.m. Air and vapour barriers 2 Responses

What is the best foam board insulation under drywall

...barrier with the foil barriers on either side. So you wouldn’t need to add a 6-mil vapor barrier afterwards, you just need to tape the joints. There is some evi...

Posted by Wesley Pracht Jan. 11, 2020, 8:10 p.m. Wall assemblies - renovation 1 Responses